The Osburn 2200 insert combines efficiency and elegance with a bay window, enhancing heat output. It's designed for long burn times and silent operation, heating 800-2,000 sq.ft. efficiently. Outputs 70,000 BTU/h max, with 8-hour burn time. High performance wood stove with 75% optimum efficiency and 2.7 g/h emissions. Independently tested and certified.